Rotary distributer for four-cycle internal-combustion engines.



E. H. TARTRAIS. ROTARY DISTRIBUTER FOR FOUR-CYCLE INTERNAL COMBUSTION ENGINES. APPLICATION FILED 311N315, 1912.

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ROTARY DISTRIBUTER FOR FOURJJYOLE INTERNAL COMBUSTION ENGINES.

APPLICATION FILED JUNE15,1912. ififig, 1 7 Patented July 7, 1914.

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UNITED srargs PATENT ornrca.

EUGENE HENRI TARTRAIS, 0F MONTMORENCY, FRANCE.

ROTARY DISTRIBU'IER FOR FOUR-CYCLE INTERNAL-COMBUSTION ENGINES.

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To all whom it may concern Be it known that I, Eooisxn I'IENRI TAR- TRAIS, citizen of the French Republic, and residing at 32 Rue des Chesneaux, Montmorency, Seine-et-Oise, France, have invented certain new and useful Improvements in Rotary Distributors for FounCycle Internal-Combustion Engines, of which the following is a specification, reference being had therein to the accompanying drawing.

The distributer valve which forms the subject matter of this inventioncomprises a continuouslv rotating cylindrical box arranged within a chamber which is integral with the cylinder and during its rotation successively brings two openings into register with a port in the cylinder. The said openings serve as the inlet and exhaust for the cylinder and communicate with suitable conduits.

Rotary valves which would answer the above definition are already known, but my invention diiiers from the known devices on account of the arrangement of the various parts, and has the end in view to avoid as far as possible all deformations of the dis tributer parts by heat, and to reduce the free play of the valve within its chamber to a minimum in order to keep it gas tight, and that without prejudice to the employment of some suitable packing.

My invention is particularly applicable to motors in which four or more cylinders are arranged one beside the other, as is usual upon motor cars. The valve which distributes the gas into all the cylinders is consequently of great length.

The accompanying drawings show by way of example part of a four cylinder motor to which my invention is applied.

Figure 1 is a section through the motor, perpendicular to the cylinders and passing through the axis of the distributor; Fig. 2 is a section through the end cylinder perpendicular to the axis of the distributer. Fig. 3 is a section on the line A-B of Fig. 1, through the distributer. Fig. 4 is a section showing the distributor with its water jacket made with integral walls. Fig. ,5 shows a modified form of the distributor.

The distributorproper 1 rotates continuously around its axis, in the direction of the arrow 2 for example, within its chamber 3 which is formed in the cylinder casting. The distributor has two conduits, a central conduit 4: for.the exhaust and an annular Specification of Letters latent.

Application filed June 15, 1912.

Serial No. 703,851.

conduit 5 tor the inlet of the mixture. These conduits are alternately brought into communication with the cylinders 6,, 6,, (3,, (3 by means of the openings 7,, 7,, 7,, 7 and 8,, 8 8,, S, in the dislributer, coming into register with the ports 9,, 9,, 9,, t), of the cylinders at the requisite moments and thus allowing the exhaust of the gases through the conduit ft which terminates into the pipe 10. The inlet is through the conduit 5 which is in communication with a carburetor (not shown) by a pipe 11 and space 19. in the dis tributer. lVithin the distributor a heat resisting lining 13 is provided and may consist for example, of asbestos protected by a metallic cover.

is formed of two sleeves l4: and 14, which are attached to the inner wall of the valve at one of their respective ends. One of these sleeves is provided with the bosses or enlargements 16 which receive the screws 17 which pass through the other sleeve, as seen clearly in Figs. 1' and A shaft 18 imparts motion to the distributor by an interposed Oldham coupling 19.

As above stated, the object of the described arrangement is mainly to produce a minimum deformation of the distributer,

heating of the exhaust conduit and because of this, also the heating of the combustible mixture and of the walls of the distributor which otherwise would take place through radiation, connection and at certain points through conduction. Most of the deformations of the exhaust conduit are thus prevented, which is of very great importance because such deformations, when they take place tend to lift the valve or the distributor at the places of contact where gas-tightness is desired. Moreover, assuming the case of a'distributer consisting of one piece; the expansion of the sockets 20 in the direction of. the arrows'ill tends todctorm the distrib- Patented July 7, int-i.

The outer wall of the valve utcr as it is indicated exaggerated dotted lines 22 in Fig. 4:.

It is to be noted that by the construction hereinbciiore described the distributer is prevented from getting unduly heated and thus proper lubrication assured. The preservation of the gas in a fresh condition, attained particularly by the heat resisting lining, is also very advantageous.

interval 12 I may arrange two, or even more,

accyn'ding to the nun'iber of cylinders. In

the described example, the intermediate annular sleeves are fixed at one extremity but they" may hefixed in their center as shown in Fig. 5, for example, in which figure the like parts have like reference letters as in Figs. 1 to 4:.

Having now described my invention what I claim and desire to secure by Letters Patent 1s-:--

In a valve for multiple cylinder internal combustion engines, a cylindrical 4 casing provided with a series of ports communicating with the cylinders of the engine, said casing being further provided with an annular inlet channel in communication with an inlet passage, a cylindrical member revoluble in said casing and provided'with a port in constant communication with said channel and with inlet and outlet ports'arranged for successive communication with the first series of ports, a second cylindrical memher, said members being attached at their respective, ends to provide an annular inlet 45 passage, said second member having exte'n sions torming ports communicating with the outlet ports of the first member, and a third cylindrical member within the second member, said third member forming heat nonoonductor and fire proof lining and having ports adapted for! communication with the ports of the second member, and an exhaust passage in constant communication with said third member.

In testimony yvhereof I aflix my signature H. C. Conn. 

